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SUMMARY:Symmetric mass generation and the Nielsen-Ninomiya theorem
DTSTART:20260623T140000Z
DTEND:20260623T160000Z
DTSTAMP:20260628T091900Z
UID:indico-event-1679417@indico.cern.ch
DESCRIPTION:Speakers: Maarten Golterman\n\nThe symmetric mass generation (
 SMG) approach to the construction of lattice chiral gauge theories attempt
 s to use interactions to render mirror fermions massive without symmetry 
 breaking\, to obtain the desired chiral massless spectrum.  If the zeros
  that often replace the mirror poles of fermion two-point functions in an 
 SMG phase are “kinematical” singularities\, general constraints can b
 e formulated on the existence of a chiral fermion spectrum which are vali
 d in the presence of (non-gauge) interactions of arbitrary strength\, inc
 luding in any SMG phase. Constructing a one-particle lattice hamiltonian 
 describing the fermion spectrum\, we discuss the conditions for the appli
 cability of the Nielsen-Ninomiya theorem to this hamiltonian. If these co
 nditions are satisfied\, the massless fermion spectrum must be vector-like
 . We comment on the qualitative difference between 4- and 2-dimensional m
 odels.\n \n\nhttps://indico.cern.ch/event/1679417/\n\nZoom: https://cern.
 zoom.us/j/68098777127?pwd=U2FQNDFZNGVyWW5YOTViQncwUmJ3UT09
LOCATION:4/2-037 - TH meeting room (CERN)
URL:https://indico.cern.ch/event/1679417/
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